a. At what layer does IPsec operate? b. What layers does IPsec protect? c. Compare the amount of cryptographic security in IPsec with that in SSL/TLS. d. Compare centralized management in IPsec and...

a. At what layer does IPsec operate? b. What layers does IPsec protect? c. Compare the amount of cryptographic security in IPsec with that in SSL/TLS. d. Compare centralized management in IPsec and SSL/TLS. e. Why is IPsec’s transparent protection attractive compared with SSL/TLS’ nontrans parent protection? f. Which versions of IP can use IPsec?